Fire-resisting shutter or door.



w. M. BRUNST & E/H. MCCLOUD.

lFIRE RESISTING SHUTTER 0R DOOR.

APPLICATION FlLED 1A`N. 9. 19|4.

Patented Nov. '14, 1916.

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FIRE RESISTING SHUTTER 0R DOOR.

APPLICATION FILI-:D IAN. 9, 19.14.

Pammaed Nov. 14, 1916.

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WILLIAM M. BRUNST AND EDWARD H. MUCLOUD, OF COLUMBUS, OHIO, ASSIGNORS T0 THE KINNEAR MANUFACTURING COMPANY, OF COLUMBUS, OHIO, A CORPORATION OF WEST VIRGINIA.

iguanas.

To all whom z't may concern Be it known that we, WILLIAM M. BRUNs'r land EDWARD H. MCCLOUD, citizens of the United States, residing at Columbus in the county of Franklin and State of Ohio. have invented a certain new and useful Improvement in Fire-Resisting Shutters or Doors, of which the followingvis a specification.

The object of this invention is to provideimproved means whereby the curtain of' such a shutter or door is suspended and held locked from further movement after it has closed.

A further object of the invention is to improve the counterbalancing of the curtain and provide a large starting movement to effect the automatic closing` of such shutters or doors.

Other objects will appear from the fol-V 4 is a section 'on the line y--y Fig. 3 to show the volute groove on the outer side of the wheel or member here depicted.' 5 is a section on the linie e--z Fig. to show the volute groove on the inner side .of the said wheel or member.

In the views 10 designates the barrel or drum to which theI iexible shutter or cur-l tain 10a is secured in the usual or any suitable manner. Said barrel or drum at `lts left hand endis supported Iupon a shaft 11 which in turn is supported in a bracket 12. The shaft 11 has fixed `to its outer end beyond the bracket a retaining wheel 13 having around its rim a number of holes 13a into any one of which a pin 14 in a lug on the bracket can be inserted to secure the shaft from rotation. Within the barrel is a' spring'l secured at one end to a collar .16., pinned to the shaft. vand having its other end attached to a Vplug 17 that in turn is secured to the drum and rotates on the shaft 11. The spring or tension member 15 is for FIRE-RESISTING lSIiI'U'JCTER OR DOOR.

Specification of Letters Patent. @Patented NV;v 14, 1916.

Application led January 9, 1914. Serial No. 811,174.

manual or otherwise and to hold the same suspended at the point to which it is raised or lowered. The other end of the barrel is supported upon a tubular shaft or extension 18 of the plug member 18B. This tubular. shaft 18 is shown as supported on roller bearings in the end bracket 12, the end of the shaft protruding somewhat beyond the outer face of the bracket. Just beyond this f' bracket and mounted loosely on the shaft 18 is a wheel 19 having a radial slot 19a and notches 19b at frequent intervals in its rim. A lpin 23 in the bracket 12a locks the wheel 19 in any positionto which it is adjusted. Keyed on said shaft 18 adjacent said wheel 19 is a wheel 20 that has in one face a volute groove 20a and in the opposite facey a volute groove 20".4 The direction 'of each of these volute grooves 'starting from its inner end isright hand. Loose on the pro- 'truding end of a shaft 21 that extends from the interior of the barrel through the tubu lar shaft and adjacent the wheel 20" is a wheel 22 having a radial slot 22a and rim spurs 22", Secure'd on the extremity of said shaft 21 is a ratchet wheel 24 having sockets y24EL in 'its rim into which a bar (not'shown) can be inserted for turning said ratchet wheel and the Shaft 2]. as hereinafter ex plained.v A pawl 25 on the wheel 22 engages the ratchetwhen turned to the left but when the ratchet has been turned as far as desired a bolt 22 on the wheel 22 is engaged with the proper` socket 24 of the ratchet to lock it.

The inner end-of the shaft 21 is ported inthe axial opening of a collar 26 pinned to the inner end of the shaft 11 so that the collar and shaft 11 can turn with reference to the shaft 21 or the shaft 21 turned in the collar, and connected with a collar 27 pinned on said shaft 21 and the collar 26, is a coil spring 28, adapted when placed under tension to act on the drum counter to the action of the spring 15. The spring 28 when the shaft 11 is held as b v the pawl 25 acts on the barrel through the ratchet wheel 24 and pawl 25, the wheel 20 and the connection between the said parts as hereinafter explained.

In the volute groove which is in the face of the wheel 20 next the wheel 19 is a traveler consisting of a curved elongated base portion 29 fitting in the volute groove and a pin 29a to project into thel radial slot 19a so that if the wheel 20 be turned the pin, shall travel in one direction or the other slot 22a of the spur wheel 22 and the operation of this traveler is the same as that first described but when the wheel 20 is turned in one direction the two travelers lmove in directions opposed to each other.

The wheel 22vand therefore the tension member 28 is latched from operation on the barrel by means of a latch lever 31 fulcrumed 31t on the side of the bracket 12a which engages one of the spurs 22b and itself is held up in latching position by means of another lever 32 pivoted on an ear 32 the lever 32 being supported by a wire 33 attached to a fixed point and containing a link 34 fusible upon a dangerous rise of temperature such as occasioned by fire near the shutter. Upon the occurrence of such a iire the levers 32 and 31 are liberated and the spring 28 operates through the ratchet 24, pawl 25, wheel 22 and traveler 30-30 on the drum to unroll or lower the curtain. The traveler 30--30a is arranged so that it lies at or near the outer terminus of the volute groove when the curtain is in its completely raised position, but if the curtain y be liberated, as by the occurrence of fire, this traveler is slid or driven to the terminal wall of said groove by the spring 28 after which the tension of the spring is exerted on the barrel to drive down the curtain.

When the ordinary curtain now on the market is held suspended by a resistance .ofl

the counterbalance spring or springs of ternpered steel the temper of the springs may be destroyed by the fire thereby rendering them ineffective to resist downward movement of the curtain. In such case the curtain may overhaul 'the barrel, stack up in the "grooves and bulge out the grooves forming openings through which fire can pass. In the present construction, when the curtain is properly down, the traveler 29-29a locks the barrel to the wheel 19, the latter being iixed to the end bracket 12a by the pin 23 as before described. In the present construction therefore the curtain is supported by the end bracket and prevented from unduly descending in the channels. v To secure this effect, ythe curtain when the structure is originally installed, is first pulled down as far as it is intended it shall ever go and the wheel 22 turned from left to right until the traveler 29 brings up against the inner termmal wall of the volute groove after whichthe pin 23 is inserted in the notch Langres of the periphery of the wheel 19 to lock the latter from rotation with reference to the end bracket. As the curtain is raised and lowered in normal operation the traveler 29-f29a isl merely carried outward or inward in the groove 19a by the action of the volute groove.

rIhe construction as shown and described is susceptible of some modiiications Without departing from the gist of the invention as claimed. f

What we claim is 1. In a tire resisting shutter or door, the combination of a curtain, a winding barrel or drum for the curtain, a vtension member for the barrel 0r drum, a volute member and a guidingmember, one of said members adapted to be actuated by and upon the release of the tension member, a lug engaging both the volute and guiding members, said lug' adapted to limit the movement of one of said members with reference to the other, and thermally controlled means for restraining the release of the tension member.

2. In a fire resisting shutter or door, the combination of a curtain, a winding barrel or drum for the curtain, and locking means to limit the unwinding movement of the barrel consisting of a lug, a ixed guiding member therefor and a volute member operated by the barrel or drum to actuate the lug to move it into position to lock the volute member and lug-guiding member together.

3. In a fire resisting shutter or door, the combination of a curtain, a winding barrel or drum therefor, and locking means to limit the unwinding movement of the barrel or drum and curtain consisting of a lug, an adjustable guiding member therefor and means for fixing the same in adjusted position, and a volute member operated by the barrel or drum to actuate the lug to move it into position to lock the' volute member and lug-guiding member together.

4. In a fire resisting shutter or door, the combination of a curtain, a winding barrel or drum therefor, and locking means to limit the unwinding movement of the barrel or drum and curtain consisting of a lug, a slotted member for guiding the same and a volute member operated by the barrel or drum to actuate the lug to move it into position to lock the volute member and the slotted guiding member together.

5. In a fire resisting shutter or door, the combination of a curtain, a winding barrel or drum therefor, a tension member, a volute member actuated by the barrel or drum, a lug, a guiding member therefor, said lug being actuated by the volute member to lock the guiding member and volute member together, and thermally controlled means fon latching thel guiding member.

or drum therefor, a tension member, a volute member actuated by the barrel or drum, a lug, a guiding member therefor, said lug being actuated by the volute member to lock the guiding member and volute member together, means for regulating the stress of the tension member on the guiding' member and thermally controlled means latching the guiding member.`

7. In a fire resisting shutter or door, the combination of a curtain, a Winding barrel or drum therefor, a tension member to act on the barrel including a shaft projecting beyond the barrel, a volute member actuated by the barrel or drum, a lug, a guiding member therefor, said lug being actuated by the volute member to lock the guiding member and volute member together, means on the tension member shaft and guiding member for regulating the tension member, and thermally controlled means for latching the guiding member.

8. In a fire resisting shutter or door, the combination of a curtain, a Winding barrel or drum for the curtain, locking means to limit the unwind-ing movement of the barrel consisting of a lug, a fixed guiding member therefor, a volute member operated by the barrel or drum to actuate the lug to move it into position to lock the volute member and guiding member together When the curtain is unwound, a tension member, a second volute member actuated by the barrel or drum, a second lug, a guiding member therefor acted on by the tension member, said last named lug being actuated by the last named volute member to lock said last named guiding member and volute member together, an thermally controlled means latching said last named guiding member. j

9. In a fire resisting shutter or door, the combination of a curtain, a Winding barrel or drum therefor, locking means to limit the unwinding movement of the barrel, a counterbalancing tension member for the normal operation of the curtain, a second tension member to act counter to the first mentioned tension member, a volute member actuated by the barrel or drum, a lug, a guiding member therefor actuated by the second named tension member, said lug being actuated by the volute member to lock the guiding member and volute member together, and thermally controlled means for latching the guiding memberr from actuation.

10. In a fire resisting shutter or door, the combination of a curtain, a Winding barrel or drum for the curtain, a tension member for the barrel, a volute member and a guiding member, one of said members being operably connected with the drum and the other having means for adjusting and fixing it in position, a lug engaging both the guiding member and the volute member, said lug adapted to limit the movement of one of said members with reference to the other.

. 11. In a fire resisting shutter or door, the combination of a curtain, a Winding drum or barrel 'for the curtain, a releasable tension member for the barrel, a volute member and a guiding member, one of said members being operably connected with the barrel and the other having means for adjusting and fixing it in position, a lug engaging both the guiding member and the volute member, said lug adapted to limit. the unwinding movement of the barrel, a second volute and guiding member, one of said members being actuatable by the tension member andfhaving means for adjusting` and iixing it in position, a lug engaging both of said last mentioned volute and guiding members, said lug adapted to limitr the unvvinding of said ten-y sion member, and thermally controlled means for restralnlng the release of said tension member.

Witnesses:

ALBERT RUSH, F. C. SCHMIDT. 

